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Tonight I checked for voltage input to the HF coil, I have 118v when stepping on the pedal and 5.x v when off the pedal. This seems to indicate that the control circuit isn't fried.

I have read that I can't check the output of the HF coil without a special meter so I didn't try.

I read a post on the interwebs by somebody who said they were a Miller tech, the post said that if you disconnected the HF capacitor you should get a 3000v spark but it wouldn't be enough to weld with. I tried that but still no HF at the points.